Improvement in nut-machines



Nut-Machine.

Pat'ented Feb. 23,1875.,

d. 9 0 6 Y 0. N

w HORSFALL Nut Machlne UNITED STATES PATENT OFFICE.

WILLIAM HORSFALL, OF ARMLEY, LEEDS, ENGLAND.

IMPROVEMENT IN NUT-MACHINES.

Specification forming part of Letters Patent No. 160,194, dated February23, 1875 application filed October 2, 1874.

To all whom it may concern:

Be it known that I, WILLIAM HoRsFALL, formerly of Sing Sing, in thecounty of Westchester and State of New York, but now residing at Armley,Leeds, in Yorkshire, England, have invented certain Improvements in Nut-Machines, of which the following is a specification This inventionrelates to machines for making nuts; and consists of a novel combinationof parts, to be hereinafter described.

Figure I represents a plan of the machine. Fig. 2 is a verticaltransverse section mainly on the line y y. Fig. 3 is a longitudinalvertical section on the line a: looking from the back toward the front.Fig. 4. is a longitudinal face view of a bar in the course of its beingworked into nuts. Fig. 5 is a broken face view of the radial hammer orrevolving swagin g device; Fig. 6, a section ofthe same, takentransversely to the axis; and Fig. 7, a section thereof in alongitudinal direction with the axis.

A is an elevated front, and B the table or upper surface, of themachine. C is a horizontal main driving-shaft, arranged in rear of themachine and parallel with the elevated front A. The heated bar D to beworked into nuts is first introduced over the one end of the table B,immediately in rear of the elevated front A, to the forming andfullering dies E F. The upper one, F, of these dies is stationary, andis double or consists of separate formers a b, and the lower die, E,which is movable, also of separate formers or dies proper o d. Thegeneral function of the die F is to hold the nut while the hole in it isbeing punched before it is'separated from the bar, or rather the formersb d thus hold it, the other formers a o of the dies E F acting as gagesand preliminary dies to prepare and shape the iron for each succeedingembryo nut as it is formed on the bar during the feed of the latterbetween the dies E F, the bar, as shown Yin Fig. 4, being worked up intoattached nuts, one in advance of the other, while passing between thedies E F. The die E is moved up and downv at intervals by means of acrossslide, G, operated by a cam, H, on the shaft (l, and formed with adip or bevel nosed projection, f, which, as the slide is moved forwardby its cam, lifts the die E by its action within a slot, j", and as saidslide is returned insures the dropping of the die. A spring, g, servesto throw the slide G back. I is a slide, which receives its forwardmotion from a cam, J, on the shaft C, and, as with the slide G and otherslides hereinafter referred to deriving their motion from cams on saidshaft, is returned by the action of a spring. This slide I carries atits front a tool, h, for pressing the forward nut-blank on the end ofthe bar D into the die F or formers b d ofthe dies E F when the latterare closed. A punch, i, which is attached to a slide, K, operated by acam, L, on the shaft C, and which passes through a crook on the forwardend of the slide I and through its tool h, then comes forward andpunches the hole in the nut-blank, the punchings passing out through adie, 7c, in the front plate A. After this the die E drops or opens, andthe punch i, with its slide K, retires, followed by the tool h of theslide I. The bar D is then pushed forward to repeat the operation ofgaging and forming the nut-blanks, and in so doing brings the forwardpunched nut still attached, but only lightly so, to the bar, in linewith an opening, M, in the front A, when a hand-mandrel is insertedthrough the hole in said nut, and the latter broken oif from the bar D.This hand-mandrel is a plain round-pointed rod, and serves to carry eachpunched nut in succession through the succeeding operations in themachine. The nut, while thus on the mandrel, isneXt placed, by the aidof the latter, within or against the inner side or face of a stationarydie or grooved block, N, when a corresponding movable die or groovedblock, O, comes up to hold the nut and mandrel in place, and to form aback for the nut, after which, and while the nut is so held orsupported, a clipping-tool, l, attached to a slide, I), comes forward tocup the front edges of the nut. The die O receives its motion from acrooked or bevel nosed slide, Q, in like manner with the die E, actuatedby a cam, S, on the shaft 0while the slide l? receives its forwardmotion from a cam, R, on said shaft. The mandrel having the nut on it isthen passed through an opening, T, in the front A, and within or througha guide, m, to feed or pass the nut into a rotary swagingA device, forthe purpose of solidifying by a hammering process, and of equalizing thesides of the nut. This rotary swaging device is driven by bevel-gears VW from the main shaft C, the bevel wheel or pinion V being' fast to asleeve,V1, which revolves freely round a Xed stud or shaft, V2, and saidsleeve carryin g at its forward end a cylinder, V3, which, together witha disk, V4, arranged Within the cylinder, revolve in common with thesleeve. The inner periphery of the cylinder has any desired number ofprojections n on it, and the periphery ofthe disk V4 a correspondingnumber of depressions O, for the purpose of giving to a series ofradially sliding hammers, V5, a succession of quick strokes or blows onthe sides of the nut, as the latter is introduced by the mandrel betweensaid hammers, shanks, or studs i' on the outer ends of the hammers,itting in between the cylinder V3 and disk V4, to secure such action ofthe hammers as the projections n in the cylinder and the notches ordepressions o in the disk pass the studs r. The hammers have theirreciprocating or sliding motion within radial grooves in a stationarydisk, V6, fast on the stud V2, and which has connected With it, byscrews, a stationary face-plate or cover, V7, to the cylinder V3. Afterthe nut has been thus hammered, it is entered, with the mandrel, throughan opening, X, in the front A and within dies A2 A2, the upper one A1 ofwhich is stationary, while the lower one A2 rises and falls at therequisite intervals, by means of a bevel-nosed slide, B', operated by acam, C', on the shaft C. While the nut is thus held or supported by saiddies it receives a blow from a facing-tool, c, for the purpose ofsmoothing or attening it, and of driving out the mandrel, which providesfor the attendant cooling the mandrel after each nut is completed. Thetool c is carried by a slide, D', operated by a cam, E', on the shaft C.

The arrangement of the several nut forming, punching, and hammeringdevices in relation with each other and with the front plate A, aiiordsthe greatest facility for manipulation of the nut from the front side ofthe inachine.

Some of the devices or combinations here described, especially thecupping and rotary swaging devices, may be used to advantage in machinesfor heading bolts.

I claim- The stationary die F and the movable die E, each constructedwith the separate formers or dies a, b and c d, in combination with thereciprocating slide K, having the punch z', and the slide I having thetool h, substantial- 1y as and for the object specied.

WM. HORSFALL.

Witnesses:

MICHAEL RYAN, FRED. HAvNEs.

